Calculated Columns Panels
                                    The Calculated Columns graphical editor is divided into a number of panels. This visual separation of elements makes understanding and using the editor quicker and easier.
                                        
                                    
- Tool-Panel: boxed in green, displays a grouped list of PQL custom column elements and functions that can be used in custom column calculations.
 - Properties: boxed in white, displays at the bottom of the screen, details and configuration options about the selected block in the graphical editor window
 - Problems: boxed in white, if a custom column fails when tested, the reason(s) will be displayed in the Problems panel.
 - Result Preview: boxed in white, when testing custom columns using the execute button, a preview will appear in the Results Preview panel.
 - Settings: boxed in orange, defines the save context and other aspects of the custom column. Click here for more details.
 - Apply: boxed in red, saves and applies the calculation as a new column in the table.
 - Preview: boxed in red, executes the calculation and the results are displayed in the Result Preview pane
 - Script Mode: boxed in red, opens the Calculated Columns script editor where the PQL expressions can be written directly.